protected void AddContinentButton_Click(object sender, EventArgs e)
{
if (this.ContinentNameBox.Text == string.Empty || this.ContinentNameBox.Text.Length > 20)
{
this.ResultContinentAdd.Text = "Invalid input parameters.";
}
var context = new WorldDBEntities();
var cont = new Continent();
cont.Name = this.ContinentNameBox.Text;
context.Continents.Add(cont);
context.SaveChanges();
this.ListBoxContinents.DataBind();
}
protected void SaveCountryButton_Click(object sender, EventArgs e)
{
var context = new WorldDBEntities();
long population;
if (this.CountryName.Text == string.Empty || this.CountryName.Text.Length > 50 ||
this.CountryLanguage.Text == string.Empty || this.CountryLanguage.MaxLength > 50
|| this.CountryPopulation.Text == string.Empty || !long.TryParse(this.CountryPopulation.Text, out population))
{
this.ResultCountryAdd.Text = "Invalid input parameters.";
return;
}
if (population < 0)
{
this.ResultCountryAdd.Text = "Invalid input parameters.";
return;
}
var country = new Country();
country.Name = this.CountryName.Text;
country.Language = this.CountryLanguage.Text;
country.Population = population;
country.ContinentId = int.Parse(this.ListBoxContinents.SelectedValue);
FileUpload fileUploader = this.NewFlagUploader;
if (fileUploader.HasFile)
{
Byte[] imgByte = null;
HttpPostedFile File = fileUploader.PostedFile;
imgByte = new Byte[File.ContentLength];
File.InputStream.Read(imgByte, 0, File.ContentLength);
country.Flag = imgByte;
}
context.Countries.Add(country);
context.SaveChanges();
this.GridViewCountries.DataBind();
context.Dispose();
}
protected void EditContinentButton_Click(object sender, EventArgs e)
{
if (this.ContinentEditNameBox.Text == string.Empty || this.ContinentNameBox.Text.Length > 20
|| this.ListBoxContinents.SelectedItem ==null)
{
this.ResultContinentUpdate.Text = "Invalid input parameters.";
return;
}
var context = new WorldDBEntities();
var idNumber = int.Parse(this.ListBoxContinents.SelectedItem.Value);
var cont = context.Continents.SingleOrDefault(c => c.Id == idNumber);
if (cont == null)
{
this.ResultContinentUpdate.Text = "Invalid input parameters.";
return;
}
cont.Name = this.ContinentEditNameBox.Text;
context.SaveChanges();
this.ListBoxContinents.DataBind();
}
protected void DeleteButton_Click(object sender, EventArgs e)
{
var context = new WorldDBEntities();
var idNumber = int.Parse(this.ListBoxContinents.SelectedItem.Value);
var cont = context.Continents.SingleOrDefault(c => c.Id == idNumber);
context.Continents.Remove(cont);
context.SaveChanges();
this.ListBoxContinents.DataBind();
this.ListViewTowns.DataBind();
}